---
title: "CVE-2021-44529: Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA) Code Injection Vulnerability "
url: https://erroneo.us/security/cve/CVE-2021-44529/
description: "CVE-2021-44529 (Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA)): Exploited in the wild (CISA KEV). A code injection vulnerability in the Ivanti…"
type: vulnerability-record
section: "Security Digest"
date_published: 2021-12-08
date_modified: 2026-08-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2021-44529"
kev: true
cvss: 9.8
epss: 0.99105
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2021-44529: Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA) Code Injection Vulnerability 

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA). CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-03-25, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-04-15 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 99.1% , percentile 99.9: FIRST’s model estimates a 99.1% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).

## Affected products (CVE record)

- n/a Ivanti EPM: 4.6.0-512

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-03-25; federal due date 2024-04-15. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 99.11% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [Listed in CISA KEV notes (forums.ivanti.com)](https://forums.ivanti.com/s/article/SA-2021-12-02?language=en_US)
- [CVE.org record CVE-2021-44529](https://www.cve.org/CVERecord?id=CVE-2021-44529)
- [NVD entry CVE-2021-44529](https://nvd.nist.gov/vuln/detail/CVE-2021-44529)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44529)
- [forums.ivanti.com](https://forums.ivanti.com/s/article/SA-2021-12-02)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/166383/Ivanti-Endpoint-Manager-CSA-4.5-4.6-Remote-Code-Execution.html)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/170590/Ivanti-Cloud-Services-Appliance-CSA-Command-Injection.html)

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Source page: https://erroneo.us/security/cve/CVE-2021-44529/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt